Rotary brush.



No. 780,423. PATBNTED JAN. 17, 196,5. A, ,Wf HfHEFFBRNAN.

vROTARY BRUSH.

APPLICATION FILED Armas. 190s.

2 sums-SHEET 1.

- MITNESSES PATENTED JAN. 17, 1905.

2 SHEETS-s113111? z.

W. H. HEFFBRNAN.

ROTARY BRUSH.

APPLICATION FILED un as, 190s rrr/frgil,

I lNVENTOH wfr/zaw,

UNii ED STATI-3s I Patented January 1'7, 1905.

PATENT OFFICE.

ROTARY BRUSH.

SPECIFICATION forming part of' Letters Patent N o. 780,423, dated January 17, 1905. Application filed April 28, 190.3. Serial No. 154,699.

To cir/ZZ whom, t may coi/1.037%:

Be it known that I, WILLIAM H. HEFFERNAN,

a citizen ofthe United States, residing at North Adams, in the county of Berkshire and State of Massachusetts, have invented new and useful Improvements in Rotary Brushes, of which `the following is aspecication.

, My invention relates to rotary brushes; and the objects of the same` are, first, to construct a rotary brush inesuch a manner that it shall be readily removable when worn out Without requiring the displacement of its shaft; second, to construct a brush in sections and provide means for holding the sections in place While the brush is being permanently secured; third, to provide efficient clamping means for a sectional brush to hold the sections from working loose.

The simple and novel construction employed by me in carrying out my invention is fully described and claimed in this specification and illustrated in the accompanying drawings, forming a part thereof, in which Figure 1 isa perspective of the helical tape with the bristles secured thereto. Fig. 2 is a detail of one of the split* rings out of which the helix is constructed. Fig.v 3 is a longitudinal section through the brush, taken on the line 3 3, Fig. A. Fig. .Lisa transverse or diametrical section taken in a plane passing through the pins of the hub-flange.V Fig. 5 is a longitudinal section of the brush with a modified form of holding device thereon. Fig. 6 is a detail ofthe pin-ring.

f Like characters of reference designatelike vparts in the diiierent views of the drawings.

Thenumeral 1 designates a helix, or more properly a helical tape, bearing radiallymounted bristles 2, preferably secured by glue. The tape 1 may be Woven; but this is so expensive as tobe impractical. So I construct it of split rings 3, of textile material or fabric, (see Fig. 2,) which are united end for end by glue, the ends 3 being overlapped. The overlapping of the ends causes the joints to bedistributed around the circumference of the brush, and thereby forms a stronger and more homogeneous brush than would otherwise result. The helical tape with bristles attached thereto may be made in "quantities in strips of any length and kept in stock, so that enough ca n be cutoff to form a brush. When the tape 1 is litted on a hub, it need not .be bent, and thereby make gaps inthe bristles at irregular intervals, but will snugly embrace a hub of proper diameter, after which they are clamped in place by disks placed on the I hub.

^ In Figs. 3 and i is illustrated a brush constructed'of twosections A, which embrace a hollow cylindrical hub having a iiange 5 formed integral with one end thereof and bearing a plurality, (four preferredof pins 6, which engage apertures 7 in the semi-annular washers 8, to which the bristles 9 are attached. The sectionsA are formed by cutting the body of the brush on a diameter- B after tliis body has been formed from the spirally-coiled tapes. hub i is provided with threads 10, and a nut 11 is iitted thereon and bears on an annular clamping-disk A12, which is also provided with .The other end of the a plurality of pins 18, which engage apertures 111 in the brush, and thereby'serve to secure the sections A in their proper relative positions. After the pins 6 and 13 have been inserted in the apertures 7 andlt the nut 11 is tightened to iiX them against all movement.

When in' use, the hub 1 is secured on a shaft l 15 by means of a set-screw 15, so that if the brush was made integral it could not be removed when worn out Without removing the shaft from its bearings. This difficulty is obviated by my sectional construction, for after loosening' the nut 11 the sections A can be disengaged from the pins 6 and 18 and new sections substituted therefor without disturbing the shaft 15, thereby saving time.

In the modified form illustrated in Figs. 5

and 6 rings 16 and 17 are employed in addition to the parts already described, which rings have apertures 16u and 17 a, respectively, therein which are engaged by the pins 6 and 13, which hold them against turning. Pins 18 are also seated in the rings 16 and 17 and engage apertures 19 in the sections A. The

above-described construction also enablesnew sections A to be substituted for old Worn-out ones without disturbing the shaft or any of the pulleys thereon.

I do not wish to be limited as to details of construction, as these may be modified in many particulars without departing from the spirit of my invention.

Having thus described my invention, what l 2. A rotary brush comprising two semicircular half sections or members, a hollow tubular member or hub, said sections consisting of compactly-joined-together strips of textile material between which are secu red radial bristles, and which sections, with their bristles, are fitted upon said hub, said hub having an end Harige, and a separate disk iitted upon said hub, at its unianged end, and means for securing said parts firmly together, as specifled.

In testimony whereof I have hereunto set my hand in presence of two subscribing` witnesses.

' WILLIAM H. HEFFERNAN. Witnesses:

BENNETT S. JoNEs, L. L. BURKET. 

